Water-proof wood-pulp board for roofing



NITE STATES ATENTY Fries.

JOSEPH F. FOGG, OF GORHAM, MAINE.

I JPECIPICATION forming part of Letters Patent No. 319,806, dated June 9, 1885.

Application filed June 11, 1884. (Specimens) To all whom, it may concern:

Be it known that I, J OSEPH F. Foes, acitizen of the United States, residing at Gorham, in the county of Cumberland and State of Maine, have invented certain new and useful Improvements in Compound for \Vaterproofing Wood-Pulp Boards for Roofing and the WValls of Buildings; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to compounds for the waterproofing of roofing and clapboarding for buildings; and it consists, substantially,in substituting for the ordinary shingles and clapboards strips of board made from wood pulp and treated with my improved waterproof mixture.

The pulp is made into wood-pulp board upon a machine similar to that used for the manufacture of paper, and can be of any desired width and thickness. After leaving the machine the board is treated with the water-proof mixture by passing it through a tank or other convenient receptacle containing the same,

the operation being continued until the board is thoroughly filled with the mixture. The board is then rolled into rolls convenient for handling, and is ready for use.

The water-proof mixture consists of petroleum, rosin, alum, and copperas in the following proportions: petroleum, one gallon; rosin, four and one-half pounds; alum, one-half pound, and copperas, one-quarter of a pound. The rosin, alum, and coppera-s are pulverized and stirred into the oil until they are thoroughly mixed. When used for roofing, it is applied i n practically the same manner in which clapboards are usually put on the walls of buildings. The staging is built to within a convenient distance of the ridge-pole and the top strip laid on. The upper edge of the second strip is then placed under the lower edge of the first, and the nails driven through 5 the edges thus placed together, and so on with the other strips. Applied in this way, the nails securing the stage are not driven through the roofing. The strips may extend the whole width or length of the building, whether used for roofing or clapboarding.

' After the roofing has been put on it may bepainted or proofed anew with a mixture consisting of the mixture already described, to'

which linseed-oil has been added in the pro- 5;

portion of two gallons of the former to one gallon of the latter. Color may be given the mixture by the use of umber or any other pigment.

The advantage of this form of roofing consists in freedom from joints, as the strip may be made to extend the whole length orwidth of the building, in the lesser number of nails required, and its superiority in quality, cost, durability, and appearance.

WVhat I claim is 1. The combination of wood pulp with the water-proof mixture consisting of petroleum, rosin, alum, and copperas, in about the .pro-

portions set forth, substantially as described.

2. AWater-proof mixture consisting of petroleum, rosin, alum, and copperas in about the proportions described.

JOSEPH F. FOGG.

Witnesses:

GEO. F. GOULD, JOHN H. Fooe. 

